CVE-2026-98462

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_conn: fix CIS hold ownership on reuse

Commit 69997d50ec57 ("Bluetooth: ISO: handle bound CIS cleanup via

hci_conn") made hci_bind_cis() and hci_connect_cis() return a

connection with one hold for the ISO layer. hci_bind_cis() currently

takes that hold only after configuring a CIS, so its BT_CONNECTED and

matching BT_BOUND paths return a bare lookup result. Its configuration

failure path can likewise call hci_conn_drop() before taking a hold.

Take the hold before any state-dependent return or configuration error

so every successful return follows the documented ownership contract

and every error drop is balanced.

hci_connect_cis() also assumes hci_conn_link() always takes a new CIS

hold before dropping the one returned by hci_bind_cis(). However, the

helper returns an existing link without taking another hold. In that

case, preserve the CIS hold for the caller and drop the redundant LE

hold becaus

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References